I will go with the Zeiss Ikon any day in my view. If you are lusting for that, may as well save up for it. Instead of spending on so many cameras and at the end, regretting some of your purchases. Get the one which you are most comfortable with, and that you will not feel insecure to take out and abuse too. That is how you get photos which are most compelling. I remember getting a minty M6 once, but I never used it. I was too afraid of scratching it more than the R3a I bought after it. At the end, I sold the M6 and invested in a medium format set up in the P6.
In short, make a decision and quit thinking about it for way too long. Get the camera and start shooting.